hamilton



(No Model.)

E. I/I-.IIAMILTONQ 2 Sheets-Sheet 1.

PAPEE GAEEIAGE PEEP MEGEAI'IIsI/I PoE TYPE WRITING MACHINES,

Patented Feb. 15,@1;

7 Llgx 2l sheets-'sheet 2.

(No MocIelv.)

- E. M. HAMILTo/N vPAPER CARRIAGE EEED IVIEOHANISM I'OR TYIEl WRITING MACHINES.

P atemd Feb. 15, 18's?.

` N. PETERS. vlwurLilhugmpher. wmngxun, nA C.

UNITED STATES,

PATENT EEICE.

EMEEY M. HAMILTON, OE NEw YORK, N. Y., VAssIeNoE To THE HAMILTON TYPE WEITER COMPANY, OE sAME PLAOE.

PAPER-CARRIAGE FEED MECHANISM FOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 357,670, dated February 15, 1887.

`Application filed December 29, 1884. Renewal May Il, 1886. Again renewed December 2, 1886. Serial No. 220,531. (No model.)

.To all whom it may concern.- Be it known that I, EMEEY M. HAMILTON,

of the city of New York, in the county and State of New York, and a citizen of the United 5 States of America, have invented a new and useful Improvement in Paper-Carriage Feed Mechanism for Type -Writing Machines, of which the following is aspecilication, reference being had to the accompanying drawings,

I forming part of the same.

The object of my invention is to secure uniform spacing between the letters of a word in the operation of printing on type-writing machines.

I My invention relates to that class of typewriting machines in which movable types are successively moved or shifted to bring them into a certain definite position for printing, and the paper printed upon is moved over or 2O across the face of the type from one letter or character to another.

In order to accomplish uniform spacing between the letters, I provide in my machine for feeding the paper to the type different dis- 2 5 tances, having reference to the different Widths i ofthe faces of the letters, the shortest feed being a distance equal to the breadth of face of the narrowest letter or letters of the alphabet plus the space desired between the letters of 3o the Word.v Then, for the printing of the next wider letters, I provide for feeding the paper by the single movement of a feed-lever double the distance, and for the widest letters three times the distance of the shortest feed. I find 3 5 that by providing these three feeds I can practically attain the spacing of the common letters ordinarily used in a type-writing machine with sufficient uniformity. If desired, however, a greater number of feeds may be employed, each being a multiple of the minimum feed, the movement of the paper in eachof the several feeds being accomplished by a single movement of the key or type-lever by which the type is brought into position for printing.

4 5 In this system of feeding it is to be understood that the types are so arranged on their levers or other form of type-carrier, and so moved or shifted to bring them successively into position for printing, that the left-hand margins,

5o or the margins or sides of the types looking in the direction of the feed, shall all correspond in position whatever may be the width of the face of the letter. In other words, if the letters were all successively brought into position and the printing-impressions were made by them on the paper without moving it, the several impressions, one upon another', would all coincide with one another on their left-hand margins, and spread out toward the right hand in proportion to the width of their respective faces.

As before said, the paper is to be moved a distance equal to the width of the faces of the letters plus the space desired between the printed letters on the paper, and in order to secure the most perfect spacing between the letters the -several types should be so proportioned in width of face as to occupy such a portion of the distance moved by the paper in feeding that the remaining portion of such 7C distance shall be equal throughout the alphabet.

To illustrate: Assume that M and XV are letters having the widest faces, and that the paper is required to be moved after the printing of each of these letters the greatest extentv of feed, which will be the width of the said lett-ers plus the spacing desired between letters and three times the distance of the feedl ing after the printing ofthe narrowest letter- 8O say the letter I. Then suppose the uextletter to be printed is I. The I then should be of such width as to occupy such a portion ofthe minimum distance of feed as will leave the remainder of such distance equal to the corresponding remaining distance of feed after the printing of the M. Then suppose the next letter to be printed is N. The paper is then to be fed after the printing of the N a distance double that of the feed after the printing of 9o the I and two-thirds the distance of the feed after `the printing of the M; The N then should be so proportioned as tooccupy in width such a portion of the distance of such feed that the remaining portion shall equal the corresponding remaining portions of the feed for the M and I.

It should be understood that I do not in this specification intend to claim anything with reference to the arrangement, construction, or roo movement of the type as above set forth. They are mentioned here only for the purpose of showing the ultimate purpose snbserved by the feed movement herein described and claimed.

The accompanying drawings represent the mechanism by which I effect the varying feed movements referred to.

Figure lis a plan of a type-writing machine embodying my invention. Fig. 2 is a vertical central section of the same, and Figs. 3, 4, and 5 ro are detail views of parts ofthe machine,herei nafter more particularly described.

In this machine the types are mounted upon the inner ends ot' a series of levers, l a', arranged radially in a circle, two of which levers are shown plainlyin Fig. 2. Their outer ends are pivoted to a series of rocking arms,

I) b', that have formed on them toothed seg- A ments of pinions e c', journaled in a supporting disk or annulus, A, the said levers being zo fulcrunied intermediate their ends on an annular rib, d, formed on the disk B, supported centrally on the, annulus A. The said levers pass through vertical slots formed in a rim, e, projecting upward from the said disk B; and

from an annulus, j', which rcsts down upon the said flange e, projects an annular rib, e', between which rib and the rib d thelevers are heldin place vertically, and between which they are permitted to slide back and forth en dwise, the rocking of the arms b b acting to vibrate the said levers on their fulciums and to carry their type ends to and from the center of the system or point at which the printingimpression is made upon the paper which,

with the plate G by a stop-pin, o".

passes between the feed-rollers C C and the type. rlhe rocking` motion is given tothe said arms I) b by means of levers h h 71?, on which are formed toothed segments i', that mesh with the said segmental pinions e e. Motion 4o is communicated to the said levers h h by means of levers j j, keys Z Z', and rods my m, the said levers j j being fulcrumed at their centers on pins or supports n. n. By depressing a key the outer end of its connected lever It is thrown up, the reverse or downward motion of the lever being effected by a spiral spring, o. The rods m m are arranged to work vertically in apertures in the disk B and base-plate D of the machine, the upper ends impinging against the under side-of the levers h l1'. These levers liy It are fulcrumed near their inner ends on an upwardly-proiecting annular iiange, 7.', formed on a disk, lr', that rests upon and is secured to the plate or disk B', that is supportedon postsp rising from the bed-plate D.

The upper edge of the projecting fiange 7.1 is

. turned inward and rounded over, and on the under side of the levers /i l1 are formed curved 6o projections q q', which hook under the said post, r, to move up and down in a hole or opening in the base D and disk B. On this post is a wide flanged collar, r', upon which rest the inner ends of the several levers h h', 85e. The raising of the outer ends of these levers acts to depress the said collar and with it carry down the post r.

E is an elbow-lever, which I here denominate the universal lever, pivoted in a bracket, t, secured to the under side ofthe plate B. One arln, if, ofsaid lever E extends through a slot in the post r, and the other arm, I?, extends upward, as represented in Figs. 2, 3, and 4. For the purpose of adjusting the collar o" relatively to the inner ends, r/ r/f/t', of the levers h l1 h2, the upper end of the post 7' is chambered and a long screw, r2, is fitted to work in said chamber. the lower end impinging against the arm t of the lever E.

F is the paper-carriage,consisting ofa frame (in which are mounted feed-rollers) fitted to slide on supporting-bars. On the front side of the said frame is secured a toothed plate,G.

uv is a dog pivoted on a rocking lever, o, and made to engage with the teeth on the plate G. On the levereis formed an arln, '15',with which the upper end of the arm t* of the elbow-lever E engages. When the arm t of lever E is depressed,the upper end of the arm t2 is carried inward against the arm o of the lever v, thereby swinging the said lever to the right, thus shifting the dog from one tooth to another on the plate G; and if the said lever is carried far enough the dog is lifted out of engagement The lever ft is swung in the opposite direction by a spiral spring, w, (one end of which is secured to the frame on lever 11,) until the dog is stopped against a stop-pin, r2. The tension of the spring w is regulated by means of a string or wire, which is con nected to the spring w and passes over a pin near the inner end of lever rand around a rotating pin or shaft, et, on lever r, to which it is secured, the said shaft being furnished with a. broad head for convenience of rotating. The arm eis furnished with a set-screw, if, for adjusting the same to the upper end of the arm tt of the elbow-lever E, and ci is a guard in the form of a staple, with its ends passing through the arln tr', so that it lies between the set-screw o and the end ofthe arm 1. This guard is movable in the holes in the arm v',th rough which it passes, but is held in place by frictioual contact with the sides of said holes, the staple being made slightly longer or shorter than the space between said holes and sprung into the holes when inserted. The guard serves as a bearing for the uppercnd of the arm t? of leverl, and prevents contact between said end and the head of the set-screw, which would be objectionable, both because the movement of the lever on the head would be liable to turn the screw and because the rocking of the said end on the face of said head would shift vertically the point ol' bearing of the lever on the head IOO ateach vibration of they lever. The staple also provides a laterally-extended bearing for said'lever,.thus providing for a lateral shifting of the position of the supporting-frame of the paper-carriage, which sometimes necessarily takes place in the adjustment of said frame on the machine.

Now, it is obvious that when any one of the keys Z is depressed, thereby raising the outer end of a lever, h, besides the movement given to a type-lever thereby, the post r will be forced downward, carrying down with it the arm tof the lever E, thereby carrying the arm t2 of said lever against the staple o? in arm o of the rocking lever t, thereby swinging said lever t on its pivot and shifting the dog u in the teeth of the plate Gto the right, and that when the pressure is taken from the key and it is allowed to rise again the spring w will act to force the said deg to the left, carrying with it the paper -carrier F, until the said dog is stopped against the pin ci. If in this operation the post o' is forced downward only far enough to shift the dog one notch or tooth, the minimum feed of the paper will be thereby effected, and then the maximum and intermediate feeds will be accomplished as the said post 1' is carried downward to shift the dog u on the bar G two, three, or more spaces, as the case may be. Thus the extent of the feed at each operation in printing will be in proportion to the distance that the said post i' is depressed. This distance is regulated and determined by the length of the short arms of the levers h h 7b2-I mean the arms extending from the fulcrums of said levers to their inner extremities or points of bearing on the collar 1*', assuming that the outer or longer arms of the levers 7L h h2 all move corresponding distances. These short arms are therefore made of different lengths to actuate the dog u to move the paper-carriage one, two, or three .collar far enough to cause the said dog to move over two teeth of said bar, such an arm being shown on lever h', Fig. 3. For the maximum feed, or the feed for the letters W, M, te., the short arms g2 of said levers h2 are of sufficient length to move the said dog over three teeth of said. bar, and such an arm is shown on h2, Fig. 4. With this arrangement of levers the described varying feed is accomplished either by making the spaces between the teeth on the bar G equal to the desired minimum feed or to the maximum feed. In theformer case the dog u has only one tooth that engages the teeth on said bar. In the latter case the dog has three such teeth, with spaces between them equal to the, minimum feed. The latter arrangement is shown in Fig. 5, in which the dog u is shown provided with three teeth, the spaces between them equal to the spaces between the teeth on the bar G in Fig. 1, and the spaces between the teeth on the bar G three times as wide as the spaces between the teeth on said bar as shown in said Fig. 1.

The principal features of thesaid type-writing machine are described and form the subject matter of the application filed in the United States Patent Office .I une 30, 1884, Serial No. 136,491. My present invention is an improvement upon the machine which is the subject of said application, and relates and is confined to the above-described new combination of devices, whereby is effected the feeding of the paper to the type different distancesnamely, a minimum distance and a maximum distance and intermediate distances that are multiples of the minimumthe several feeds being proportioned to the varying widths of t the faces of the letters printed.

What I claim as my invention, and desire to secure by Letters Patent, isy .1. In the described type-writing machine, the combination of the paper-carriage provided with a toothed feed-bar, G, the swinging lever o, provided with the arm o', the dog u,

pivoted to said lever to engage the teeth on said bar, the vertically-reciprocating rod r, provided with the annular flange o", the elbowlever E, one arm of which engages the said rod i',vthe other arm engaging the said swinging lever c, so as byits vibrations to rock said lever 'U on its pivot, and the described series of levers h h', &c., their inner arms engaging the said annular fiange i" and being of different lengths, so that by an equal movement of the said levers on their fulcrums the said dog a will be shifted one, two, three, or more teeth on the said feed-bar G, in proportion to the lengths, respectively, of the inner arms of said series of levers, all as described.

2. In a type-writing machine, the described paper-carriage and its operating-dog, in combination with the central reciprocating rod or post, i", provided with a iiange, o1', the lever E, one arm of which engages the said post, and the series of levers la hh, Ste., their short arms g g g2, Sac., made of different lengths',whereby an equal movement of the several levers of the series will reciprocate the said post and vibrate said lever different distances, as and for the purpose described.

3. In a type-writing machine, the described paper-carriage and its operating-dog, in co1nbination with the series of levers h, &c., and rods m, said levers being fnlcrumed on the inwardly-curved upper edge of the annular flange Il', and provided with the curved projections q, that engage the said curved edge of said flange, the 'post i, provided with the annular flange r', the reciprocating rods or le- IOO IIO

vers j, and keys Z, as and for the purpose de- 5. In the described type-writing machine, scribed. the combination, with the bell-crank lever E 1. In the described typewriting machine, and vibrating lever fu, carrying a dog, u, and the series oflevers 71,7 &e., fulerumed upon and provided with an arm, n', of the set-screw v I5 5 engaging, as described, the upper inwardlyand guard v7, as and for thepurpose described.

curved edge of the annular ange k', and having as integral parts of said levers toothed EMERY M. HAMILTON. segments i, in combination with the toothed pinions c, together With type-levers and the ro keys l, levers j, and rods m, as and for the purpose described.

VitneSSeS:

A. G. N. VERMILYA, D. PALMER HERRICK. 

